Emergency-brake.



' '1'0 all whom it 'may concern:

OFFICE..

i* "GUNDER SORENSEN,"OF ST. PAUL, MINNESQTAQ EMERGENCY-BRAKE.

Beit known that 1,.. GUNDER SORENSEN,

i 4 a citizen of the United States, residing" at St. Paul, in the county of-y Ramsey vand State of `Minnesota, have invented a new and usefullmprovement in Emergency-Brakes, of

. which the following is a specification.

This invention relates to brake mechanism and more particularly to that class in4 of a railway rail.

provide an efficient and effective emergency` The primary object of this invention is to brake which will automatically sand the surface ofthe track below the brake shoe for the purpose ofincreasing friction between the impinging brake surfaces.

In the accompanying drawing forming part of this specification, Figure 1 is a side elevation of my invention; Fig. 2 is a detail partly in sect-ion of the frame and a portion of a railway rail and Fig.. Sis an end view of the structure illustrated infFig. 2.

Referring to the drawings A indicates a car truck which maybe of any ordinary form having wheels 2 and truck frame 8 in which said wheels are journaled itbeing` understood that the frame and wheels are reproduced on each side'of the truck in the A ordinary manner.

et indicates the railway railat one side of l a road bed onwhich the wheels 2'are adapted to travel. Secured tothe frame between the wheels 2 is a oke 5 having vertical guides 6 spaced 'apart resembling brackets which are secured to the frame by'bolts 7.

These brackets have 4verticaliandparallel channels 8 which receiveaf/vertically reciprocable brake element B .working freely through collar 9 at the lower "end of the yoke.A The collar 9 is integral with the guides 6 and assists the guides in limitingv lateral movement of the element B. rllhe brake element is in the form of a hopper like receptacle open at its upper end `and provided witha wear shoe 10 at its lower end which is adapted to impinge against the surface of the rail aand brake the vehicle when the brake element is set." The brake element is provided with ribs 11 which are adapted to slide loosely inthe channels 8 of the yoke thus acting in co-1 operation with the guides to cause the brake element to move vertically in the yoke. In the brake element above the shoe 10 a floor is provided converging upwardly from two 13 for sand is journaled freely.

downwardly and 'the opposite sides of the receptacle andai; *each ylower end porion of said oo'ran oricewl is formed in the shoe in which' a feed wheel' The Sides of the' brake element Sua-ing" in' p Patented Dec, 117,191@ Application filed August 19, 1912. Seri-a1 No. 715,782. i I

the guides 6' lconverge towardfeaeh-cther' guides 511 :converge correspondingly, leaving the brake element free to tiltin synchronism withthefdrward or backward movement of thevehicle when its shoe is pressed .downwardly agaistfthe' rail. The lower portion of the vshoe has contact. surfaces 14 with the rail' inclined downwardly from the two opposite sides of the shoe, the incline being very slight' but sufficient to cause the brake element to'rtilt,

with its forward braking surface as regards the direction of travell of the vehiclezfbear mg Hat against the rail-and the contiguous contact Asurface raised out of contact with the rail. The position o f the feed 'wheels 13 is such as to cause the periphery of the` wheel at the end of the contactl surfaceflliV bearing upon the tread ofthe rail Ito' roll` upon the rail while the other wheel raised out of rolling contact. bearing upon the tread of the rail-copratee with the rail tofeed sand, from-thellfoppe in the brake element' down upon the tread' of the rail :in-front of the shoe'.y Each feed wheel hasits periphery toothedfat 15.-

adaptedto revolve in 'the lowerportionoef the hopper in position to vfeed sandf-bylj-it's teeth down on to the .rail as the whtelrey'k of the receptacle or hopper khas its free endv 'sweeping freely over.. the teeth of the wheel when the -wheelrevolves'- forwardly but volves. y A spring dog 16 -mountediuponathe serves tclstop the wheelfrom turningba'ck. Another spring 17 mounted upon a side bfi the receptacle has its free end sweeping overv` theteeth of the feed wheel for the purpose of normally closing the assag'e between the wheel and hopper and limiting the amount of sand fed to the interstices of the teeth.

' loe The walls 18 of the receptacle dependsuiiiciently at 19 in front of the wheels to act as guards in directing the sand downupon the rail and prevent any obstruction. such as small stones coming into contact with and..

breaking the feed wheels.

' The brake element 1s reclprocated up and Vdown'by a shaft 20 assing vertically and freely through an en arged openin 21 in' the frame of the truck and connecte tothe ioor of the hopper above the' shoe. Thel upper p ortion of shaft carries'as' ring' 22 impmglngagalnst the surface j o *the .doesn'ormally 4raise the brake element into superior position.. and outg of contact' Iwith .the rail-Wand closes the-npper end of the' truck frame-and against a collar 23 carrled by the shaft. This spring. tends to and Y --hopperagainst the lower surface of lthe truckframe. Y rIlhe, upper end 'of the shaft carries a piston 24- working in the cylinder 25 which `is carried by brackets 26 on thev "frame of the truck. This cylinder'maybc connected with a source-of air pressure or Huid motive When-the pressure is'turned on through the pipe 28 by the valve, the .piston 24 is forced downfcarryingthe brake element with its 20. thiiiis braking the 'truck .directlynpon the shoe into Contact with the tread of the rail,

'. It yisl obvious that any suitable operating vmechanism 'may be employed for actuating "the'brake shoe, and I do not confine myself "tothe use of. air or fluid 'pressure means forthis purpose.'` By pressing the brake ele I nient down against the tension ofthe spring '.22'jby hand'or by the use of a hand imple' with sand in readiness for use.

nient the hopper may be opened and filled In accordance with the patent .statutes I have described the principles of operation of Emy invention together with the apparatus 'i embodiment thereof but 'I' desire to have 'it' understood that the construction shown is which I now consider toj represent t-he best only' illustrative and that the invention can bel carried out by other means and applied to uses other than l'those above set forth` Within the scope of the following claims.

Having described my invention, what I "ncl .as new-and desire to protect by Leti te Patent is f. lA brake 4adapted to rictinally engage the tread of a rail, comprising, in.' combination, a car truck .having a support forming ai" vertical guide, a brake shoe adapted to, slide in said guide and frictionally engage the surface of a rail,- and a sanding devlce carried by saidshoe having a feed wheel shoeon said rail.

2.' In a brake for railway cars, a vehicle.

ower Y(not shown). 4by means, oithe pipe 2 -controlledby the valve 28.`

said shoe.

' two subscribing operable y.through peripheral' contact with `said rail when said shoe is lowered and.

fadapted'touprecipitate sand in front of said frame, a brake .shoe carried above 4the tread surface 4of a rail of a road bed, a` guide 4vframe .on said vehicle frame in which said shoe 1s adapted to' move'verticallyand. having limited longitudinal tilting `movement as regards said rail, means for setting said .shoe into frictional contact with' the surface of said rail, said shoe having'its lower'surf v face slantingl longitudinally down from'b'oth of its .ends and carrying a ho per having an orifice at each end of saidv s oe adapted to conduct sand' down upon the, tread of the tion, a vehicle frame having a downwardly f projecting guide, fa brake shoe having a double rail engaging surface slanting downwardly from .both'of its ends and an orifice at each end ofy said shoe communicating with said* hopper, a feed Wheel placed in each orifice having a toothed periphery, a

spring sweeping overthe teeth of said wheel and adapted to limit the amount of material fed by said'wheel. from said hopper, 'said shoe being'loosely mounted inits guide to tilt forward or back according to the direc'- tionin which said vehicle is moving, whereby one of the rail engaging surfaces of saidV shoe and its' corresponding feed device are adapted to engage vthe tread of the rail and to feed sand from said hopper: in front of said shoe, whiletheremaining rail engag-l ing surface of said vshoe and its feed device are simultaneously tilted upout of co-action l with the tread of said rail. y

' In testimonywhereof, I have signed my name to this specification, 1n the presence of witnesses.

GUNDER somieres-N.v Witnesseszf I-I. L. Fisc-HER,

Gr. I-I.Dressoirv the tilting action of 

